NDLI: Achieving full-diversity and fast maximum likelihood decoding in asynchronous analog network coding

Content Provider	IEEE Xplore Digital Library
Author	Yun Liu Wei Zhang Soung Chang Liew Ching, P.C.
Copyright Year	2014
Description	Author affiliation: Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Hong Kong, China (Yun Liu; Ching, P.C.) \|\| Inf. Eng. Dept., Chinese Univ. of Hong Kong, Hong Kong, China (Soung Chang Liew) \|\| Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia (Wei Zhang)
Abstract	This study designs space-time codes in analog network coding for asynchronous two-way relay networks, where asynchronous transmissions can cause diversity loss. We propose a novel code, called zero-padded interleave reversal Alamouti code (ZP-IR AC) to achieve full diversity with fast maximum likelihood decoding. Specifically, to combat symbol misalignment caused by asynchronous transmissions, the two terminals insert zero padding when transmitting to relays. Thereafter, the second relay performs an interleave reversal procedure to retain full diversity at each terminal. A salient feature of ZP-IR AC is that it can be decoupled into several independent parts that facilitate fast maximum likelihood decoding. Simulations of ZP-IR AC show full diversity gain. The bit error rate performance of ZP-IR AC is comparable to that of the synchronized Alamouti code and outperforms those of some recent schemes.
Sponsorship	IEEE Signal Process. Soc.
Starting Page	4279
Ending Page	4283
File Size	269682
Page Count	5
File Format	PDF
ISBN	9781479928934
DOI	10.1109/ICASSP.2014.6854409
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-05-04
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relay networks (telecommunications) Decoding Delays Bit error rate Vectors Diversity methods maximum likelihood decoding Analog network coding asynchronous spacetime codes full diversity
Content Type	Text
Resource Type	Article

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